Sian Williams has vowed not to cry on her final episode of 'BBC Breakfast' tomorrow morning (15.03.12) and has even devised an "anti-crying strategy" alongside her co-host Bill Turnbull

Sian Williams has vowed not to cry on her final episode of 'BBC Breakfast' tomorrow morning (15.03.12).

The 47-year-old presenter - who will bow out of her co-anchor role alongside Bill Turnbull tomorrow - admitted she has been forced to devise an "anti-crying strategy" as she is already feeling "emotional" at the prospect of leaving the show.

She told The Sun newspaper: "Bill said to me today, 'What's our anti-crying strategy?' because we've got an anti-giggling strategy. So we have to work it out from now to Thursday morning. We've got that time to work on how not to cry.

"I have already got quite emotional out there because Bill has said some lovely things. We have been friends for 20 years and working together for more than ten so it will be a big moment on Thursday."

The mother-of-four quit 'BBC Breakfast' ahead of the show's move to MediaCity in Salford, Manchester, later this year, although her agent claimed at the time it was because she had simply grown tired of early starts.

He said: "This is not about going to Salford but about a decade of getting up before the dawn chorus. We've been talking to the BBC for the past six to nine months about potential new roles where she doesn't need to use her alarm clock quite so frequently."

Sports presenter Chris Hollins has also refused to relocate to Manchester - a move which is believed to be costing the BBC £877 million - but Sian's co-host Bill Turnbull will continue to front the flagship breakfast programme alongside a new female anchor.

Meanwhile, Sian has bagged her own Radio 4 show and will cover the London 2012 Olympic Games for the BBC.